•
•
Seepage
Dripping and external condensation of noncorrosive liquids
There can be no holes through the enclosure and no conduit knockouts or conduit openings, except when used with oilresistant
gaskets to mount oil-tight or dust-tight mechanisms. Doors are also provided with oil-resistant gaskets. In addition, enclosures for
combination controllers have hinged doors, which swing horizontally and require a tool to open.
3.4.2 IP Standard
Table 3.2 provides a cross-reference between the 2 standards. Table 3.3 demonstrates how to read the IP number and then defines
the levels of protection. The drives meet the requirements of bot
Table 3: NEMA and IP Number Cross-reference
NEMA and UL
IP
Chassis
IP00
Protected chassis
IP20
Type 1
IP21
Type 12
IP54
Table 4: IP Number Breakdown
1
st
digit
2
nd
digit
Level of protection
0
–
No protection.
1
–
Protected to 50 mm (2.0 in). No hands would be able to get into the enclosure.
2
–
Protected to 12.5 mm (0.5 in). No fingers would be able to get into the enclosure.
3
–
Protected to 2.5 mm (0.1 in). No tools would be able to get into the enclosure.
4
–
Protected to 1.0 mm (0.04 in). No wires would be able to get into the enclosure.
5
–
Protected against dust – limited entry.
6
–
Protected totally against dust.
–
0
No protection.
–
1
Protected from vertical dripping water.
–
2
Protected from dripping water at 15° angle.
–
3
Protected from water at 60° angle.
–
4
Protected from splashing water.
–
5
Protected from water jets.
–
6
Protected from strong water jets.
–
7
Protected from temporary immersion.
–
8
Protected from permanent immersion.
AJ300847815559en-000101 / 130R0337
16 | Danfoss A/S © 2020.09
Approvals and Certifications
VLT® AQUA Drive FC 202
Design Guide